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Finding the Fourth Proportional to 200,308.50, 300,030.80 and 188,531.51

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Solution

The fourth proportional to 200,308.50, 300,030.80 and 188,531.51 is: 282,390.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,308.50 : 300,030.80 = 188,531.51 : x
  2. Step 2: Convert to fraction form
    200,308.50/300,030.80 = 188,531.51/x
  3. Step 3: Cross multiply
    200,308.50x = 300,030.80 × 188,531.51
  4. Step 4: Simplify right side
    200,308.50x = 56,565,257,327.70
  5. Step 5: Solve for x
    x = 56,565,257,327.70/200,308.50
  6. Step 6: Final answer
    x = 282,390.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.